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Get row id in ListView ItemTemplate

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User1510859543 posted

I am trying to get the record ID from a row inside a ListView ItemTemplate with the following markup and code but keep getting the following error on the code.

Unable to cast object of type 'System.Web.UI.HtmlControls.HtmlTableCell' to type 'System.Web.UI.WebControls.ListViewDataItem'.

Below is the markup and code affected. It is failing on the 2nd line of the Sub.

   <asp:CheckBox ID="ckComplete" runat="server" Checked='<%# Eval("Complete") %>' 
          AutoPostBack="True" OnCheckedChanged="ckComplete_CheckedChanged" />
 

   Protected Sub ckComplete_CheckedChanged(sender As Object, e As EventArgs)
        Dim ck As CheckBox = CType(sender, CheckBox)
        Dim lvitem As ListViewDataItem = CType(ck.Parent, ListViewDataItem)
        'get the TaskID value from this row
        Dim strTaskID As String = DirectCast(lvitem.FindControl("LblTaskID"), Label).Text
        Dim strSQL As String = ""

	update code here...

        lvTasksOpen.DataBind()
    End Sub

Thursday, July 20, 2017 2:17 PM

Answers

User2103319870 posted

Dim lvitem As ListViewDataItem = CType(ck.Parent, ListViewDataItem)

Try finding out the control from container instead of Parent like below

Protected Sub ckComplete_CheckedChanged(sender As Object, e As EventArgs)
        Dim ck As CheckBox = CType(sender, CheckBox)
        'Instead of parent use NamingContainer
        Dim lvitem As ListViewDataItem = CType(ck.NamingContainer, ListViewDataItem)
        'get the TaskID value from this row
        Dim strTaskID As String = DirectCast(lvitem.FindControl("LblTaskID"), Label).Text
        Dim strSQL As String = ""

        'update code here...

        'lvTasksOpen.DataBind()
    End Sub

Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM

Thursday, July 20, 2017 2:26 PM

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Get row id in ListView ItemTemplate

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